Performance Silicon Varactor Diode SKYWORKS SMV1235-079LF for High Q Resonators in Wireless Systems
Key Attributes
Model Number:
SMV1235-079LF
Product Custom Attributes
Diode Configuration:
1 Independent
DC Reverse Voltage(Vr):
15V
Series Resistance (Rs):
600mΩ
Diode Capacitance:
6.4pF@3V;3.6pF@6V
Mfr. Part #:
SMV1235-079LF
Package:
SC-79
Product Description
Skyworks SMV123x Series: Hyperabrupt Junction Tuning Varactors
Product Overview
The Skyworks SMV123x series comprises silicon hyperabrupt junction varactor diodes engineered for low tuning voltage Voltage Controlled Oscillators (VCOs). These varactors feature low series resistance, making them ideal for high-Q resonators in wireless system VCOs operating at frequencies exceeding 10 GHz. The series is characterized for capacitance and resistance over temperature, offering reliable performance in demanding applications.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Product Line: SMV123x Series
- Technology: Silicon Hyperabrupt Junction
- Compliance: Skyworks Green (Halogen-free, RoHS-compliant)
- Moisture Sensitivity Level: MSL1 at 260 C
Technical Specifications
Absolute Maximum Ratings
| Parameter | Symbol | Minimum | Maximum | Units |
|---|---|---|---|---|
| Reverse voltage | VR | 15 | V | |
| Forward current | IF | 20 | mA | |
| Power dissipation | PDIS | 250 | mW | |
| Operating temperature | TOP | -55 | +125 | C |
| Storage temperature | TSTG | -55 | +150 | C |
| Electrostatic discharge: Human Body Model (HBM), Class 1B | ESD | 1000 | V |
Electrical Specifications (TOP = 25 C, Unless Otherwise Noted)
| Part Number | CT @ 1 V (pF) | CT @ 3 V (pF) | CT @ 6 V (pF) | CT @ 1 V / CT @ 3 V (Ratio) | CT @ 1 V / CT @ 6 V (Ratio) | RS @ 3 V, 500 MHz () | |||
|---|---|---|---|---|---|---|---|---|---|
| Min | Max | Typ | Min | Max | Min | Max | Typ | ||
| SMV1231 | 1.43 | 1.72 | 0.97 | 0.61 | 1.5 | 1.8 | 2.5 | 2.90 | |
| SMV1232 | 2.34 | 2.86 | 1.50 | 0.94 | 1.5 | 1.9 | 2.6 | 3.3 | 1.50 |
| SMV1233 | 3.00 | 3.60 | 1.80 | 1.10 | 1.5 | 1.9 | 2.6 | 3.3 | 1.20 |
| SMV1234 | 5.85 | 7.15 | 3.60 | 2.00 | 1.6 | 2.0 | 2.8 | 3.4 | 0.80 |
| SMV1235 | 10.35 | 12.65 | 6.40 | 3.60 | 1.6 | 2.0 | 2.9 | 3.4 | 0.60 |
| SMV1236 | 15.50 | 18.50 | 9.20 | 5.30 | 1.6 | 2.0 | 3.0 | 3.5 | 0.50 |
| SMV1237 | 45.00 | 54.00 | 26.90 | 14.40 | 1.6 | 2.0 | 3.0 | 3.5 | 0.40 |
Capacitance vs Reverse Voltage
| VR (V) | CT (pF) SMV1231 | CT (pF) SMV1232 | CT (pF) SMV1233 | CT (pF) SMV1234 | CT (pF) SMV1235 | CT (pF) SMV1236 | CT (pF) SMV1237 |
|---|---|---|---|---|---|---|---|
| 0 | 2.35 | 4.15 | 5.08 | 9.63 | 18.22 | 26.75 | 71.82 |
| 0.5 | 1.87 | 3.22 | 3.95 | 7.53 | 14.12 | 20.61 | 56.10 |
| 1.0 | 1.58 | 2.67 | 3.28 | 6.28 | 11.67 | 17.02 | 46.89 |
| 1.5 | 1.40 | 2.28 | 2.80 | 5.39 | 9.91 | 14.38 | 40.33 |
| 2.0 | 1.22 | 1.97 | 2.41 | 4.68 | 8.52 | 12.29 | 35.13 |
| 2.5 | 1.09 | 1.72 | 2.09 | 4.09 | 7.36 | 10.56 | 30.71 |
| 3.0 | 0.970 | 1.51 | 1.82 | 3.58 | 6.40 | 9.16 | 26.87 |
| 3.5 | 0.882 | 1.35 | 1.62 | 3.15 | 5.62 | 8.04 | 23.57 |
| 4.0 | 0.794 | 1.22 | 1.45 | 2.81 | 4.99 | 7.19 | 20.83 |
| 4.5 | 0.732 | 1.13 | 1.33 | 2.54 | 4.50 | 6.53 | 18.62 |
| 5.0 | 0.683 | 1.05 | 1.24 | 2.32 | 4.11 | 6.01 | 16.87 |
| 5.5 | 0.648 | 0.99 | 1.16 | 2.15 | 3.80 | 5.61 | 15.48 |
| 6.0 | 0.613 | 0.94 | 1.10 | 2.02 | 3.55 | 5.28 | 14.36 |
| 6.5 | 0.590 | 0.90 | 1.05 | 1.90 | 3.34 | 5.02 | 13.46 |
| 7.0 | 0.567 | 0.86 | 1.01 | 1.80 | 3.17 | 4.81 | 12.72 |
| 7.5 | 0.551 | 0.84 | 0.98 | 1.72 | 3.03 | 4.64 | 12.11 |
| 8.0 | 0.534 | 0.81 | 0.96 | 1.65 | 2.91 | 4.49 | 11.61 |
| 9.0 | 0.512 | 0.78 | 0.92 | 1.55 | 2.73 | 4.28 | 10.87 |
| 10.0 | 0.497 | 0.76 | 0.90 | 1.47 | 2.61 | 4.13 | 10.38 |
| 11.0 | 0.492 | 0.75 | 0.88 | 1.42 | 2.53 | 4.02 | 10.06 |
| 12.0 | 0.487 | 0.74 | 0.87 | 1.38 | 2.47 | 3.95 | 9.84 |
| 13.0 | 0.480 | 0.73 | 0.86 | 1.35 | 2.43 | 3.89 | 9.68 |
| 14.0 | 0.472 | 0.73 | 0.85 | 1.33 | 2.40 | 3.84 | 9.56 |
| 15.0 | 0.466 | 0.72 | 0.84 | 1.32 | 2.38 | 3.80 | 9.47 |
SPICE Model Parameters
| Part Number | CJO (pF) | VJ (V) | M | CP (pF) | RS () |
|---|---|---|---|---|---|
| SMV1231 | 1.88 | 10.13 | 4.999 | 0.44 | 2.50 |
| SMV1232 | 3.43 | 8.36 | 4.690 | 0.68 | 1.50 |
| SMV1233 | 4.21 | 11.87 | 6.430 | 0.81 | 1.20 |
| SMV1234 | 8.36 | 7.95 | 3.960 | 1.15 | 0.80 |
| SMV1235 | 15.85 | 8.78 | 4.570 | 2.15 | 0.60 |
| SMV1236 | 22.89 | 9.62 | 5.230 | 3.59 | 0.50 |
| SMV1237 | 61.40 | 14.51 | 6.780 | 8.90 | 0.25 |
Package and Marking Information
| Package Type | Marking | Package Inductance (LS) |
|---|---|---|
| SC-79 | Cathode and HF | 0.7 nH |
| SOD-323 | KA3 | 1.5 nH |
| SOT-23 | A | 1.5 nH |
| SC-70 | Cathode and HG | 1.4 nH |
| SOD-882 | Y | 0.45 nH |
| SC-79 | Cathode and HK | |
| SOD-323 | B | |
| SOT-23 | Cathode and HS | |
| SC-70 | DQ | |
| SOD-882 | G | |
| SC-79 | Cathode and HX | |
| SOD-323 | Cathode and HY | |
| SOT-23 | EQ | |
| SC-70 | R | |
| SOD-882 | DT1 |
2403111455_SKYWORKS-SMV1235-079LF_C150886.pdf
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